It's hard to say given different dynos and fudge factors and so on. However my opinion is that around 100rwhp out of a good, fresh, stock smallport 4AGE is a realistic upper figure. Add about 10% to that for the extra capacity of the 7AGE and you're around your figure.
So I don't think it's disappointing. However that all depends on if/how the dyno run's been played with.
The torque does sound a bit funny. Have a look through the dyno results forum at the 4AGEs in there.
Hen
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